120 lines
3.3 KiB
C
120 lines
3.3 KiB
C
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/***************************************************************************
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* Copyright (C) 03/2005 by Olaf Rempel *
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* razzor@kopf-tisch.de *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <netinet/ip.h>
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#include <arpa/inet.h>
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#include <sys/ioctl.h>
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#include <pthread.h>
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#include "list.h"
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#include "netpkt.h"
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#include "hlswmaster.h"
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LIST_HEAD(send_queue);
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static int scan_sock;
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void pkt_queue(struct net_pkt *pkt) {
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list_add_tail(&pkt->list, &send_queue);
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}
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void scan_transmit(void) {
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struct net_pkt *pkt, *tmp;
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while (1) {
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plugins_scan();
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list_for_each_entry_safe(pkt, tmp, &send_queue, list) {
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if (sendto(scan_sock, pkt->buf, pkt->size, 0, (struct sockaddr *)&pkt->addr, sizeof(pkt->addr)) < 0)
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log_print("scan_transmit(): sendto()");
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list_del(&pkt->list);
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free(pkt);
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}
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sleep(30);
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}
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}
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void scan_receive(void) {
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struct net_pkt *pkt;
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fd_set fdsel, fdcpy;
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int recvsize, i;
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FD_ZERO(&fdsel);
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FD_SET(scan_sock, &fdsel);
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while (1) {
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memcpy(&fdcpy, &fdsel, sizeof(fdsel));
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select(FD_SETSIZE, &fdcpy, NULL, NULL, NULL);
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ioctl(scan_sock, FIONREAD, &recvsize);
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if (recvsize <= 0)
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continue;
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if (!(pkt = malloc(sizeof(struct net_pkt) + recvsize)))
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continue;
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i = sizeof(struct sockaddr_in);
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pkt->size = recvfrom(scan_sock, pkt->buf, recvsize, 0, (struct sockaddr *)&pkt->addr, &i);
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if (!plugins_parse(pkt))
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log_print("received unknown packet\n");
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free(pkt);
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}
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}
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int scan_init() {
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struct sockaddr_in dst;
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int i;
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if ((scan_sock = socket(PF_INET, SOCK_DGRAM, 0)) < 0) {
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log_print("scan_init(): socket()");
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return 0;
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}
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dst.sin_family = AF_INET;
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dst.sin_port = htons(7130);
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inet_aton("0.0.0.0", &dst.sin_addr);
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if (bind(scan_sock, (struct sockaddr *)&dst, sizeof(dst)) < 0) {
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log_print("scan_init(): bind()");
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return 0;
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}
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if (setsockopt(scan_sock, SOL_SOCKET, SO_BROADCAST, &i, sizeof(i))) {
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log_print("scan_init(): setsockopt()");
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return 0;
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}
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return 1;
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}
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void scan_exit() {
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close(scan_sock);
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}
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